Assertion : Fahrenheit is the smallest unit m | vedclass

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(D) The Assertion is incorrect because the size of a degree in a temperature scale is determined by the number of divisions between the freezing and b

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If the Assertion is incorrect but the Reason is correct.

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(D) The Assertion is incorrect because the size of a degree in a temperature scale is determined by the number of divisions between the freezing and boiling points of water. In the Celsius scale $(^oC)$,there are $100$ divisions. In the Fahrenheit scale $(^oF)$,there are $180$ divisions. In the Reaumur scale $(^oR)$,there are $80$ divisions. In the Rankine scale $(^oRa)$,there are $180$ divisions. Since the Rankine scale has the largest number of divisions for the same temperature interval,its unit size is actually smaller than that of the Fahrenheit scale. Therefore,the statement that Fahrenheit is the smallest unit is false. The Reason is correct because Daniel Gabriel Fahrenheit developed the first standardized mercury-in-glass thermometer and the associated Fahrenheit scale in $1724$.

$Assertion :$ Fahrenheit is the smallest unit measuring temperature.
$Reason :$ Fahrenheit was the first temperature scale used for measuring temperature.

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$Assertion :$ Fahrenheit is the smallest unit measuring temperature.$Reason :$ Fahrenheit was the first temperature scale used for measuring temperature.